NJM2274 LOW POWER VIDEO AMPLIFIER WITH Y-C MIXER. Power Save CTL V Yin. Vout. Vsag. Cin. 7 2 C Mute CTL

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1 NJM7 LOW POWER VIDEO AMPLIFIER WITH Y-C MIXER GENERAL DESCRIPTION The NJM7 is a low power, V operation video amplifier with Y/C mixer and 7ohm driver, which connect TV monitor directly. The NJM7 has mute function, and suitable for energy save products and low power systems such as a digital camera, DVC and other video amplifier systems. PACKAGE OUTLINE NJM7R (MSOP8 (VSP8)) FEATURES Low Operating Voltage.8 to.v Internal Y/C MIX Circuit db amplifier, Driver Circuit (-line drive) Y-input: Clamp C-input: Bias Operating Current 9.mA typ. at =.V Operating Current at Power Save.9mA typ. at =.V Bipolar Technology Package Outline MSOP8 (VSP8)* *MEET JEDEC MO-87-DA BLOCK DIAGLAM Power Save 6 Vref Discharge Clamp 7Ω 8 Bias 7 C Mute Ver. --

2 NJM7 ABOSOLUTE MAXIMUM RATINGS (Ta= C) PARAMRTER SYMBOL RATINGS UNIT Supply Voltage 7. V Power Dissipation P D mw Operating Temperature Range Topr - to +8 C Storage Temperature Range Tstg - to + C ELECTRICAL CHARACTERISTICS ( =.V,Ta= C) PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT Operating Voltage Vopr.8.. V Operating Current Icc No Signal ma Operating Current (Power Save Mode) Isave Power Save Mode -.9. ma Maximum Output Voltage Vom f=khz,thd=%. - - Vpp Voltage Gain Gv =khz,.vpp, Sine Video Signal (note).9..9 db Frequency Characteristic Gf =MHz/kHz,.Vpp, Sine Video Signal (note) db Differential Gain DG =.Vpp,Step Video Signal -. - % Differential Phase DP =.Vpp,Step Video Signal -. - deg Chroma Mute Cross talk CT =.MHz,.Vpp db S/N SNv =.Vpp, %White Video Signal, =AC gnd Wide Band db khz to 6MHz,R L =7ohm Second Distortion Hv =.Vpp,.8MHz Red Field Video Signal, =AC gnd db R L =7ohm Input Resistance Rcin Chroma Input - - kω Mute Switch Change Voltage VthMH. - VthML -.6 V Power Save Switch VthPH. - Change Voltage VthPL -.6 V (note) Sine Video Signal us<t<us 7mVpp 7mVpp 86mVpp - -

3 NJM7 CONTROL TERMINAL EXPLANATION PARAMETER STATUS NOTE H Chroma Mute: ON Chroma Mute L Chroma Mute: OFF OPEN Chroma Mute: OFF H Power Save: OFF Power Save L Power Save: ON OPEN Power Save: ON TEST CIRCUIT P.S pf pf µf.µf pf Ω CIN PS NJM7 YIN.µF + + µf µf Ω - -

4 NJM7 APPLICATION CIRCUIT () Standard circuit () SAG correction unused circuit P.S P.S µf µf CIN.µF PS NJM7 pf CIN.µF PS NJM7 pf YIN YIN.µF C + + µf µf.µf C + 7µF () Two-line driving circuit P.S µf CIN.µF PS NJM7 pf YIN.µF C + 7µF () Standard circuit The SAG correction reduces output coupling capacitor values. The capacitor of C (µf) is recommended for the portable application. However, the µf capacitor may deteriorate SAG, and lose synchronization by luminance fluctuation. Adjust the C value, checking the waveform containing a lot of low frequency components like a bounce waveform (In case of worst condition). Change the capacitor of C into a large value to improve SAG. () SAG correction unused circuit Cancel the SAG correction to improve lost synchronization. Connect the coupling capacitor after connecting the pin and pin. The recommended value is 7µF or more. () Two-line driving circuit This circuit drives two-line of Ω. However, it may cause to lose synchronization by an input signal of large APL change (% white signals more than Vp-p). Confirm the large APL change waveform (% white signals more than Vp-p) and evaluate sufficiently. - -

5 NJM7 TYPICAL CHARACTERISTICS Icc vs. Isave vs. Icc (ma) Isave (µa) (V) (V) Voltage Gain vs. Frequency GV vs.. Gain (db) Gv (db).. Frequency (khz) (V) Gf vs. CT vs. V+ - Gf (db) - - CT (db) (V) (V) - -

6 NJM7 THD vs. Icc vs. Ta. THD (%) Icc (ma)..vp-p.vp-p (V) Isave vs Ta Gv vs Ta. Isave (µa) 9 6 Gv (db) Gf vs Ta DG/ DP vs Ta Gf (db) - - DG (%) DP (deg) DG DP

7 NJM7-9 CT vs Ta Vth vs. Ta -8. CT (db) -7-6 Vth (V). Vth ON -. Vth OFF [CAUTION] The specifications on this databook are only given for information, without any guarantee as regards either mistakes or omissions. The application circuits in this databook are described only to show representative usages of the product and not intended for the guarantee or permission of any right including the industrial rights. -7-

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